Lock for electric lamps.



E. H. WEBER. LOCK FOR ELECTRIC LAMPS. APPLICATION FILED DEO.27,1909.

Patented July 5, 1910.

EDWARD H. WEBER, OF ST. LOUIS, MISSOURI.

Lock iron ELECTRIC LAMPS.

Specification of Letters Patent.

Patented July a, mic.

Application filed December 27, 1909. Serial No. 585,115.

To all whom it may concern:

Be it known that I, EDWARD H. WEBER, a citizen of the United States, and resident of St. Louis, Missouri, have invented certain new and useful Improvements'in Looks for ElectricLamps, of which the following is a specification containing. a full, clear, and exact description, reference being bad to the accompanying drawings, forming a part hereof.

My invention relates to im rovements in locks for incandescent electric amps, the obfeet of my invention being to construct a lock which is applied to the lamp and socket in such manner as to prevent the unlawful removal of the lamp and shade from the socket.

For the above purposes my invention consists in certain novel features of construction and arrangement of parts as will be hereinafter more fully described, pointed outin the claims and illustrated by the accompanyin drawing. in which:

*igure 1 is an elevation of a lamp and socket having my improved lock secured thereto and showing a shade in section suspended from the socket; Fig. 2 is a plan of a socket having my improved lock thereon; Fig. 3 is a plan similar to Fig. 2-showing the clamp for the lock in section and also showing the key for operating the clamp, a portion of which is in section; Fig. 4 is a vertical, sectional elevation taken on the line 44 of Fig. 3; Fig. 5 is a perspective of the portion of the. lock which embraces the amp; and, Fig. 6 is a perspective of one of the nuts employed in the lock.

Referring by numerals to'the accompanying drawing: 1 designates the socket which is of ordinary construction and provided With the ordinary ca or cover 2 having the integral, annular, en arged portion 3. The lower portion of the socket -is provided with the ordinary internal screw threads- (not shown) for the securing and holding of the electric lamp. 4 designates the electric lamp having the usual boss or projection 5 at its lower end. The lower end of the socket 1 is provided with the annular rib 6 and arrangedto be suspended therefrom is the shade 7.

It is to be understood that all of the parts just described are of the ordinary constructlon.

8 and 9 designate the matin faces of a is struck clamping collar, each of whic of the key '22 the clamping in two of the housings 11 are the nuts 12 designed to conform in shape with the housings and a portion-of the clamping member as shown in Fig. 3.

' 13 designates set screws arranged in the housings opposite. the ones embracing the nuts 12. Each ofth'e set screws 13 is provided with an enlarged head 14 in the outer face of which is formed a recess 15. Formed in the inner faces of the nuts 12 are the grooves 16.

The clamping members 8 and 9 are prm vided with slots 17 arranged for the accommodation of'the set screws 16 which are carried by the socket cap to secure the cap to the socket proper.

In some forms of sockets the cap or cover is secured to the socket without set screws such as 18, hence for this reason in such instances the slots 17 may be dispensed with, however, I prefer to use the slots so that the clamping members -may be employed in connection with various forms of sockets.

v19 designates flexible arms of a substantially -U-s aped member having an enlarged portion 20 which is perforated at 21 for the purpose of receiving theboss or projection 5 of the lamp.

It is to be observed that the recesses 15,

'formed in the heads of the set screws, are.

arranged eccentrically, and for. movingfthe set screws I have provided the key 22 in the end of which is formed a depression- .The key is provided with an eccentrically arrangedprojection designed to seat in the recess 15.

- In assembling the various parts, the-clamping members 8 and 9 are arranged in positions embracing the socket over the enlarged portion 3 with the extensions 10 engaging the shoulders of the enlarged portion 3.

The nuts 12 and set screws 13 are then placed within the housings 11 and by means members are drawn partially together. he shade 7 is then secured in a common way to the socket and the lamp 4 is then secured within the socket in the ordinary manner.

The U-shaped member, or retaining device, comprising the perforated enlarged portion 20 and the integral arms 19, is then placed in position with the enlarged, perforated portion 20 embracing the boss or pro j ection on the lamp and the arms 19 inserted upwardly through the perforations in the housings 11 and in positions to be engaged by the notches 16 in the nuts 12 and, when in such positions the key 22 is inserted over the head of one of the set screws and the nut is drawn to a position clamping the arm 19 between the nut and a portion of the housing. The ke is then removed and inserted in the opposite side of the clamping members and the same operation of drawing up the opposite nut performed, thus, it is obvious the lamp is secured against removal from the socket and, by reason of the lamp being thus secured, it is impossible to remove the shade. It is apparent that the ordinary mask may be locked in a similar manner as the shade is locked. v

The shade as shown is of the ordinary frustum shape but it is obvious that other forms of shades may be locked in the same manner. I r

In Fig. 4 I have illustrated the locking nut drawn to a position clamping one of the arms 19 so as to prevent itsmovement relative to the clamping members. i

I claim:

1. A look for electric lamps, comprising a clampin member embracing the socket, a U-shape member embracing the lamp and means for securing the Ushaped member to the clamping member.

2; A lock for electric lamps, comprising a 1 separable clamp arranged to embrace a lamp socket, a U-shaped member embracing the lamp, means carried by the clamping memher for embracing the ends of the U-shaped member and means for securing the ends of {fie U-shaped member to the clamping mem r. 3. A lock for electric lamps, comprising separable clamping members for embracing the lamp socket, means to prevent vertical movement of the clamping members relative to the socket, anut carried by one of the clamping members and a set screw carried by the opposite clamping member, means for embracing a lamp and arranged to be engaged by said nut for locking the lamp to the socket.

4. A lock for electric lamps, comprising separable clamping members arranged to embrace'the lamp socket, inte a1 extensions carried by the clampin mem rs to prevent vertical movement of t e clamping members relative to the socket, integfeal housings formed on the clamping mem rs, nuts arranged in a pair of said housings, set screws arranged in the opposite housings and designe to be seated 1n said nuts a U-shaped member having an aperture designed to embrace the lamp, the ends of which arearranged to be embraced by said nuts and said housings.

In testimony whereof, I have signed my name to this specification, in presence of two subscribing witnesses EDWARD H. WEBER.

Witnesses:

E. L. WALLACE, N. G. BUTLER. 

